'\" t
.\"     Title: idmap_rfc2307
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 03/09/2023
.\"    Manual: System Administration tools
.\"    Source: Samba 4.17.6
.\"  Language: English
.\"
.TH "IDMAP_RFC2307" "8" "03/09/2023" "Samba 4\&.17\&.6" "System Administration tools"
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.SH "NAME"
idmap_rfc2307 \- Samba\*(Aqs idmap_rfc2307 Backend for Winbind
.SH "DESCRIPTION"
.PP
The idmap_rfc2307 plugin provides a way for winbind to read id mappings from records in an LDAP server as defined in RFC 2307\&. The LDAP server can be stand\-alone or the LDAP server provided by the AD server\&. An AD server is always required to provide the mapping between name and SID, and the LDAP server is queried for the mapping between name and uid/gid\&. This module implements only the "idmap" API, and is READONLY\&.
.PP
Mappings must be provided in advance by the administrator by creating the user accounts in the Active Directory server and the posixAccount and posixGroup objects in the LDAP server\&. The names in the Active Directory server and in the LDAP server have to be the same\&.
.PP
This id mapping approach allows the reuse of existing LDAP authentication servers that store records in the RFC 2307 format\&.
.PP
When connecting to the LDAP server provided by an AD server, the parameter
\m[blue]\fBldap ssl ads\fR\m[]
determines whether SSL should be used\&. When using a stand\-alone LDAP server,
\m[blue]\fBldap ssl\fR\m[]
applies\&.
.SH "IDMAP OPTIONS"
.PP
range = low \- high
.RS 4
Defines the available matching UID and GID range for which the backend is authoritative\&. Note that the range acts as a filter\&. If specified any UID or GID stored in AD that fall outside the range is ignored and the corresponding map is discarded\&. It is intended as a way to avoid accidental UID/GID overlaps between local and remotely defined IDs\&.
.RE
.PP
ldap_server = <ad | stand\-alone >
.RS 4
Defines the type of LDAP server to use\&. This can either be the LDAP server provided by the Active Directory server (ad) or a stand\-alone LDAP server\&.
.RE
.PP
bind_path_user
.RS 4
Specifies the search base where user objects can be found in the LDAP server\&.
.RE
.PP
bind_path_group
.RS 4
Specifies the search base where group objects can be found in the LDAP server\&.
.RE
.PP
user_cn = <yes | no>
.RS 4
Query cn attribute instead of uid attribute for the user name in LDAP\&. This option is not required, the default is no\&.
.RE
.PP
realm
.RS 4
Append @realm to cn for groups (and users if user_cn is set) in LDAP queries\&. This option is not required, the default is not to append the realm\&.
.RE
.PP
ldap_domain
.RS 4
When using the LDAP server in the Active Directory server, this allows one to specify the domain where to access the Active Directory server\&. This allows using trust relationships while keeping all RFC 2307 records in one place\&. This parameter is optional, the default is to access the AD server in the current domain to query LDAP records\&.
.RE
.PP
ldap_url
.RS 4
When using a stand\-alone LDAP server, this parameter specifies the ldap URL for accessing the LDAP server\&.
.RE
.PP
ldap_user_dn
.RS 4
Defines the user DN to be used for authentication\&. The secret for authenticating this user should be stored with net idmap secret (see
\fBnet\fR(8))\&. If absent, an anonymous bind will be performed\&.
.RE
.SH "EXAMPLES"
.PP
The following example shows how to retrieve id mappings from a stand\-alone LDAP server\&. This example also shows how to leave a small non conflicting range for local id allocation that may be used in internal backends like BUILTIN\&.
.sp
.if n \{\
.RS 4
.\}
.nf
	[global]
	idmap config * : backend = tdb
	idmap config * : range = 1000000\-1999999

	idmap config DOMAIN : backend = rfc2307
	idmap config DOMAIN : range = 2000000\-2999999
	idmap config DOMAIN : ldap_server = stand\-alone
	idmap config DOMAIN : ldap_url = ldap://ldap1\&.example\&.com
	idmap config DOMAIN : ldap_user_dn = cn=ldapmanager,dc=example,dc=com
	idmap config DOMAIN : bind_path_user = ou=People,dc=example,dc=com
	idmap config DOMAIN : bind_path_group = ou=Group,dc=example,dc=com
	
.fi
.if n \{\
.RE
.\}
.SH "AUTHOR"
.PP
The original Samba software and related utilities were created by Andrew Tridgell\&. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed\&.
